elementui-rules校验

1.方式一

el-from :rules=“rules”
el-from-item 中prop与rules中属性名对应

rules: {
    name:[{
        required: true,
        message: '请输入用户名',
        trigger: 'blur'
        },{
        min: 2,
        max: 5,
        message: '长度在 2 到 5 个字符'
        },{
        pattern: /^[\u4E00-\u9FA5]+$/,
        message: '用户名只能为中文'
    }
        //{ pattern:/^[a-zA-Z]w{1,4}$/, message: '以字母开头，长度在2-5之间， 只能包含字符、数字和下划线'}
    ],
    password: [{
        required: true,
        message: '请输入密码',
        trigger: 'blur'
    }, {
        min: 6,
        max: 30,
        message: '长度在 6 到 30 个字符'
    }, {
        pattern: /^(\w){6,20}$/,
        message: '只能输入6-20个字母、数字、下划线'
    }],
    mobile:[{ 
        required: true,
        message: '请输入手机号码',
        trigger: 'blur'
    },
    {validator:function(rule,value,callback){
            if(/^1[34578]\d{9}$/.test(value) == false){
                callback(new Error("请输入正确的手机号"));
            }else{
                callback();
            }
        }, trigger: 'blur'}
    ],
    //   pattern: /^1[34578]\d{9}$/, message: '目前只支持中国大陆的手机号码' }
    peopleID:[{
        required: true,
        message: '请输入身份证ID',
        trigger: 'blur'
        },{
           pattern:/(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/, message: '你的身份证格式不正确' 
        }
    ],
    carId:[
        {required: true, message: '请输入车牌号', trigger: 'blur'}, 
        {pattern:/(^[\u4E00-\u9FA5]{1}[A-Z0-9]{6}$)|(^[A-Z]{2}[A-Z0-9]{2}[A-Z0-9\u4E00-\u9FA5]{1}[A-Z0-9]{4}$)|(^[\u4E00-\u9FA5]{1}[A-Z0-9]{5}[挂学警军港澳]{1}$)|(^[A-Z]{2}[0-9]{5}$)|(^(08|38){1}[A-Z0-9]{4}[A-Z0-9挂学警军港澳]{1}$)/,
         message: '常规格式：晋B12345'},
    ],
},

1.方式二

行内校验 直接：rules写需求

<el-form-item 
   :label="$t('user.regionname')" 
   prop="regionids"
   :rules="[
   { required: true, message: 'The regionname cannot be empty',trigger:'blur'}
  ]">
  <el-input id="regionids" style="width:80%;" readonly name="regionids" :title="update.regionids" v-model="update.regionids"/>
  <RegionSelect v-bind:genre="3" @selectRegion="getSelRegion" v-bind:toChildName="dialogStatus==='update'?update.regionids:fromChildNames"></RegionSelect>
  </el-form-item>

3.方式三

自定义校验 同方式一 只是将其抽取出来 写成函数

rule为校验规则对象
value为 输入值
callback为回调函数 用于返回

data() {
    const validateUsername = (rule, value, callback) => {
      if(!value || value == ''){
        callback(new Error('用户名不能为空'))
      }else {
        callback()
      }
    }
    const validatePass = (rule, value, callback) => {
      if(!value || value == ''){
        callback(new Error('密码不能为空'))
      }else if (value.length < 5 || value.length > 25) {
        callback(new Error('密码长度为5-25个字符'))
      } else {
        callback()
      }
    }
    return {
      user:{},
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePass }]
      },
      loading: false,
      pwdType: 'password',
      redirect: undefined
    }
  }